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'[EE] Need 74S387 and 82S129 Bipolar prom programme'
2007\02\11@194432 by Jim Pruitt

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I am trying to find a circuit to program 74S387 and 82S129 bipolar proms.  I
have run across several sites that talk about programming the 82S129 prom
for the Motorola Syntor and MCX100 vhf radios.   I  have a project where I
need to
read a 74S387, save the file,  then duplicate the prom.  The only site where
I have found any hardware is on Paul Bennet,  N7OCS sites (
http://www.geocities.com/SiliconValley/5857/progamr.htm  ) but it is
strictly for the 82S129.  Jameco has the 74S387 for about $2.50 each in lots
of 10 where the 82S126 and 82S129 are about $10 each.

I gather that Paul's software will only create the hex file for the Syntor
or MCX radios and not work as a general prom programming software but have
been unable to verify that.  Paul also stated that his parellel port
programmer did not
work well with fast Windows computers and his software is Dos only.  I have
no issue with using DOS.

I ran across one circuit in a February 1981 issue of Radio Electronics
Magazine but it is for 32x8 proms and is strictly manual with no computer
interface ability.  Can that be expanded to work with 256x4 or 512x4 proms
like the 74S387?

I did quite a bit of Googling but have found nothing helpful.  I almost had
myself talking into buying either the Transtronics Pocket Programmer or the
Andromeda Labs Eprom+ until I realized that both in the $250 to $300 range
require a module for bipolar proms that cost another $150 and if I needed
other abilities (like 68HC or some Pic's or Eproms) then another module was
needed for that and they ranged from $60 to about $200 and that makes a
cheap programmer cost as much as or more than some of the "universal
programmers" that start at about $800 and go up.  In my Googling I ran
across quite a few hits from repeater-builders and similar forums where
commercial 2 way radio users needed to read and program new proms and needed
the same kind of information that I am requesting but I saw no replies that
looked useful (at least none useful to me).  For that reason I am asking
this list if anyone has information for programming proms.

I have a couple eprom programmers.  One is a Needhams PB10 but it uses an
ISA slot and none of my computers have ISA slots now.  The PB10 (and all
Needham programmers) do not support bipolar proms at all so I am trying to
find other hardware and software that does support bipolar proms and the
different timing requirements of the different proms.

Programming proms is something that I do need to do from time to time and
since bipolar proms are almost dinosaurs it is unlikely that the hardware is
going to get easier to find since the chips to program are starting to get
hard to find and expensive so I would like to acquire the ability to do it
myself.

Can anyone point me to a circuit for a bipolar prom programmer that I can
build?  Can anyone point me to software that will work with that programmer?

Thank you.

Jim Pruitt

2007\02\12@023414 by Philip Pemberton

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face
Jim Pruitt wrote:
> I am trying to find a circuit to program 74S387 and 82S129 bipolar proms.

[snip]

I'm designing a semi-universal PROM programmer at the moment - if you can hang
on a bit, I'll be putting the design on my website when it's done. ATM I'm
thinking about using a PIC-based boost converter to generate the program
voltage, but an LM317 and a higher voltage PSU may be a better (=cheaper)
option...

At the moment I need copies of the programming algorithms - I've got the
Signetics Generic I algorithm and a typed-in version of the National
Semiconductor progspec, but nothing on the following chips:
       AMD 27S series
       National Semiconductor 74S series
       TI 18S series
       Harris/Intersil 7000 series
       Fujitsu 7000 series
       MMI (Monolithic Memories) 6000 series

Anyone with databooks covering these chips, a scanner and some spare time is
encouraged to contact me off-list :)

Thanks.
--
Phil.                         |  (\_/)  This is Bunny. Copy and paste Bunny
spam_OUTpiclistTakeThisOuTspamphilpem.me.uk         | (='.'=) into your signature to help him gain
http://www.philpem.me.uk/     | (")_(") world domination.

2007\02\12@035619 by Peter P.

picon face
Philip Pemberton <piclist <at> philpem.me.uk> writes:

Philip, you might want to know that bunny is still ruptured. You can see what he
looks like here (among other places):

http://article.gmane.org/gmane.comp.hardware.microcontrollers.pic/109399

thanks,
Peter


2007\02\12@092814 by William Bross

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Jim Pruitt wrote:

{Quote hidden}

Jim,

I don't know of any programmer circuits that support either but my
production programmer does support both chips.  If you need some help in
the short term, you could send me the chips you need copied and I'll do
that for you.  I could even read them, send you the file for you to edit
and then program the new file for you.  Contact me off list if you like.

Bill

2007\02\12@105658 by alan smith

picon face
ahh....I saw the 82S129 and my first thought was....MCX100 radio !!  I've often thought about redoing this, to have it controlled by a PIC or something, so I can modify the frequencies on the fly.
 
 But back to programming it.  Last time I changed my PROM was probably 8 or 9 years ago, and had access to a Data I/O programmer, and it worked great.  If you can generate the hex file for it, then start contacting your local CM's and find out who does programming for them and see if they wouldnt mind programming it for you.  Else I bet there is someone on this list that has access to a prom burner.


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2007\02\16@115353 by Alan B. Pearce
face picon face
>Philip, you might want to know that bunny is still ruptured.
>You can see what he looks like here (among other places):

Oh, he comes up fine on my Outlook, using plain text. That looks like there
is a tab character, or a proportional font in the picture somewhere.

2007\02\16@121632 by Philip Pemberton

face
flavicon
face
Alan B. Pearce wrote:
>> Philip, you might want to know that bunny is still ruptured.
>> You can see what he looks like here (among other places):
>
> Oh, he comes up fine on my Outlook, using plain text. That looks like there
> is a tab character, or a proportional font in the picture somewhere.

No, it's because Nabble replaces at-signs with the text " <at> " in email
addresses. The extra characters slice, dice and generally dissect the bunny :(

--
Phil.                         |  (\_/)  This is Bunny. Copy and paste Bunny
.....piclistKILLspamspam@spam@philpem.me.uk         | (='.'=) into your signature to help him gain
http://www.philpem.me.uk/     | (")_(") world domination.

2007\02\16@124349 by David VanHorn

picon face
>
>
> No, it's because Nabble replaces at-signs with the text " <at> " in email
> addresses. The extra characters slice, dice and generally dissect the
> bunny :(
>
> --
> Phil.                         |  (\_/)  This is Bunny. Copy and paste
> Bunny
> piclistspamKILLspamphilpem.me.uk         | (='.'=) into your signature to help him
> gain
> http://www.philpem.me.uk/     | (")_(") world domination.


Didn't happen on this one, but bunny still looks like the lady after that
trick with the box and the saw.
It's a proportional font thing.   Bunny is allergic to proportional fonts.

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